<template>
  <div class="details wrap">
    <Crumb :navs="nav"></Crumb>
    <main>
      <div class="content">
        <div class="l">
          <div class="bigImg">
            <img
              :src="imgBaseUrl + productInfo.coverImg"
              width="100%"
              height="100%"
              alt=""
            />
            <!-- 使用自定义指令实现图片懒加载代替，在大图不好用，容易一直显示默认图，用户体验不好，直接放弃 -->
            <!-- <img
              v-imgLazy="imgBaseUrl + productInfo.coverImg"
              width="100%"
              height="100%"
              alt=""
            /> -->
          </div>
          <ul>
            <li
              v-for="(item, index) in productInfo.imgAltas"
              :key="index"
              @mouseenter="imgTabFn(item.src, index)"
              :style="{
                border: index == imgTabIndex ? '1px solid red' : 'none',
              }"
            >
              <img
                :src="imgBaseUrl + item.src"
                width="100"
                height="100"
                alt=""
              />
            </li>
            <!-- <li></li>
            <li></li>
            <li></li> -->
          </ul>
        </div>
        <div class="r">
          <div class="top">
            <h2>{{ productInfo.seriesTitle }}</h2>
            <p>{{ productInfo.seriesSubTitle }}</p>
            <div class="score">{{ productInfo.coin }}积分</div>
          </div>
          <div class="down">
            <section
              v-for="(item, index) in productInfo.parameterJson"
              :key="index"
            >
              <strong>选择颜色{{ item.title }}</strong>
              <ul>
                <li
                  :class="{ active: ditem.currentActivate }"
                  v-for="(ditem, index) in item.parameters"
                  :key="index"
                  @click="youCanBuyFn(ditem.id)"
                >
                  {{ ditem.title }}
                  <!-- -{{ ditem.id }} -->
                </li>
                <!-- <li>黄色</li> -->
              </ul>
            </section>
            <div style="margin: 10px 0">
              <strong>数量 <span>*礼品库存99件</span></strong>
              <div class="step">
                <div class="reduce" @click="stepFn(-1)">-</div>
                <input type="text" disabled v-model="stepNum" />
                <div class="add" @click="stepFn(1)">+</div>
              </div>
            </div>
            <div class="btns">
              <div class="addToCart" @click="addTheshopCart">加入购物车</div>
              <div class="buyNow">立即购买</div>
            </div>
          </div>
        </div>
      </div>
      <aside>
        <h3>你还可以兑换</h3>
        <ul>
          <li
            v-for="item in themYouCanBuy"
            :key="item.id"
            @click="youCanBuyFn(item.id)"
          >
            <div class="l">
              <img :src="imgBaseUrl + item.img" alt="" />
            </div>
            <div class="r">
              <div class="title">{{ item.name }}</div>
              <div class="score">
                <span>{{ item.coin }}</span>
                积分
              </div>
            </div>
          </li>
        </ul>
      </aside>
    </main>
    <ul class="tabs">
      <li :class="{ active: !problem }" @click="problem = false">
        礼品详情
        <!-- {{ problem }} -->
      </li>
      <li :class="{ active: problem }" @click="problem = true">常见问题</li>
    </ul>
    <div v-show="!problem">
      <!-- 商品详情的内容盒子 -->
      <div v-html="productInfo.description">商品详情的内容盒子</div>
    </div>
    <div class="issue" v-show="problem">
      <!-- 常见问题的内容盒子 -->
      <h4>兑换后运费如何收取？</h4>
      <p>
        商城内大部分实物产品均可包邮，也支持上门自提。虚拟产品则无需运费，可在兑换后直接使用。
      </p>
      <p class="mb20">
        （注：新疆，西藏，内蒙古，青海，海南，宁夏暂不支持包邮，在此地区兑换商品需提前与客服确认运费。）
      </p>
      <h4>如何申请退换货？</h4>
      <p>所有产品均为鸡腿兑换礼品，无质量问题不支持退换货；</p>
      <p>如因喜好不同，或到货后后悔等原因，不支持退货；</p>
      <p>
        因客户原因如联系方式有误、电话停机、不接电话、无理由拒收等造成快件无法正常签收的情况，叩丁狼均不进行补发或赔付；
      </p>
      <p>
        如因质量问题需要退货，将由客服人员与客户联系，确认邮寄地址与流程。退回物品不得有人为损坏或使用痕迹，否则拒绝退换；
      </p>
      <p class="mb20">
        如顾客选择自行寄回商品，请先垫付运费，到货验证商品后，叩丁狼将以鸡腿发放形式为用户报销运费，不接受单方面到付件。
      </p>
      <h4>如何开具发票？</h4>
      <p>叩丁狼积分商城产品均为定制礼品，使用积分兑换的产品均不支持开票。</p>
      <h4>关于鸡腿价格问题</h4>
      <p class="mb20">
        因可能存在系统缓存、页面更新延迟等不确定性情况，导致价格显示异常，商品具体售价请以订单结算页价格为准。如您发现异常情况出现，请立即联系我们补正，以便您能顺兑换。
      </p>
      <h4>联系我们</h4>
      <p>www.wolfcode.cn</p>
      <p class="mb20">微信公众号搜索“叩丁狼”</p>
    </div>
  </div>
</template>

<script>
import Crumb from "@/components/Crumb";
import { detailsApi, addShopCartApi } from "@/request/Api";
import { mapActions } from "vuex";
// import imgLazy from "@/directive/imgLazy";
export default {
  components: {
    Crumb,
  },
  data() {
    return {
      stepNum: 2,
      themYouCanBuy: [],
      productInfo: {},
      // 图片切换栏的当前index
      imgTabIndex: 0,
      nav: [
        { name: "首页", link: "#" }, // # 只是为了跟后端数据保持一致，后端数据改了，可以少改
        { name: "全部商品", link: "#" },
        { name: "商品详情", link: "#" },
      ],
      problem: false,
    };
  },
  created() {
    // 设置滚动条高度为0，避免在其他页面滚动到底部，跳转到详情页就在底部
    document.documentElement.scrollTop = 0;
    let id = this.$route.query.id;
    // console.log(id);
    this.getProductInfo(id);
  },
  methods: {
    ...mapActions({
      asyncShowToast: "showToast/asyncShowToast",
      asyncUpdateUserInfo: "userInfo/asyncUpdateUserInfo",
    }),
    // 复用封装
    async getProductInfo(id) {
      let productsDetailRes = await detailsApi(id);
      if (!productsDetailRes) return;
      // console.log({ productsDetailRes });
      console.log("productsDetailRes.data:", productsDetailRes.data);
      // 处理删除地址栏，手动删除 id 后，控制台出现报错
      if (productsDetailRes.code != 0) return;
      let { themYouCanBuy, productInfo } = productsDetailRes.data;
      this.themYouCanBuy = themYouCanBuy;
      this.productInfo = productInfo;

      // 图片和选中状态初始化
      this.productInfo.coverImg = this.productInfo.imgAltas[0].src;
      this.imgTabIndex = 0;

      // 把富文本的图片标签src替换为 有域名的
      // 解构写法  法一：
      /* productInfo.description = productInfo.description.replace(
        /upload\//g,
        this.imgBaseUrl + "/upload/"
      ); */
      // 法二：
      productInfo.description = productInfo.description.replaceAll(
        "upload/",
        this.imgBaseUrl + "/upload/"
      );
      // console.log("拼接完的路径：", productInfo.description);
    },
    youCanBuyFn(inId) {
      this.$router.push(`/details?id=${inId}`);
      this.getProductInfo(inId);
    },
    // 切小图换对应的大图
    imgTabFn(src, idx) {
      this.productInfo.coverImg = src;
      this.imgTabIndex = idx;
    },
    stepFn(val) {
      // 库存跟后端数据库有关联，一般我们只做减的限定
      if (this.stepNum == 1 && val == -1) return;
      this.stepNum += val;
    },
    async addTheshopCart() {
      const addShopCartRes = await addShopCartApi({
        productId: this.productInfo.id,
        total: this.stepNum,
      });
      if (addShopCartRes.code != 0) {
        addShopCartRes.message;
        return;
      }
      // alert("添加成功");
      this.asyncShowToast({
        isShow: true,
        msg: "添加成功!",
        type: "success",
      });
      console.log({ addShopCartRes });

      // 更新用户状态法一：发请求
      // this.asyncUpdateUserInfo();
      // 更新用户状态法二：改变 key 值，触发重载组件
      this.$emit("undatekey");
    },
  },
};
</script>
 
<style lang = "less" scoped>
@import "../assets/css/public.less";
@base-color: #0a328e;

.details {
  main {
    margin-bottom: 52px;
    display: flex;
    .content {
      width: 884px;
      display: flex;
      justify-content: space-between;
      .l {
        .bigImg {
          width: 459px;
          height: 440px;
          background-color: #fcf;
          margin-bottom: 21px;
        }
        ul {
          width: 459px;
          display: flex;
          justify-content: space-between;
          li {
            width: 100px;
            height: 100px;
            background-color: #cff;
            cursor: pointer;
            img {
              filter: brightness(50%);
            }
            &:hover {
              img {
                filter: brightness(100%);
              }
            }
          }
        }
      }
      .r {
        padding: 7px 49px 0 31px;
        .top {
          padding-bottom: 23px;
          border-bottom: 1px solid #ececec;
          h2 {
            font-size: 28px;
            color: #000000;
          }
          p {
            margin-top: 15px;
            font-size: 14px;
            font-weight: 300;
            color: #999999;
          }
          .score {
            font-size: 28px;
            font-weight: bold;
            color: #fd604d;
            margin-top: 26px;
          }
        }
        .down {
          padding-top: 19px;
          strong {
            font-weight: 300;
            color: #000000;
            margin-bottom: 14px;
            display: block;
            span {
              color: #666;
              font-size: 14px;
            }
          }
          ul {
            width: 100%;
            overflow: hidden;
            li {
              padding: 5px 10px;
              cursor: pointer;
              height: 32px;
              float: left;
              text-align: center;
              line-height: 32px;
              color: #666666;
              border: 1px solid #d1d1d1;
              margin-right: 20px;
              margin-bottom: 11px;
              &.active {
                border-color: @base-color;
                color: @base-color;
              }
            }
          }
          .step {
            background: #fff;
            width: 106px;
            margin-bottom: 24px;
            height: 32px;
            display: flex;
            justify-content: space-between;
            .reduce,
            .add {
              width: 30px;
              text-align: center;
              line-height: 32px;
              height: 32px;
              cursor: pointer;
              box-sizing: border-box;
              border: 1px solid #ccc;
              user-select: none;
            }
            input {
              width: 46px;
              height: 32px;
              user-select: none;
              border: 0;
              box-sizing: border-box;
              border-top: 1px solid #ccc;
              padding: 0;
              text-indent: 1.5em;
              outline: none;
              border-bottom: 1px solid #ccc;
            }
          }
          .btns {
            display: flex;
            margin-bottom: 25px;
            div {
              width: 150px;
              height: 46px;
              line-height: 46px;
              text-align: center;
              margin-right: 19px;
              cursor: pointer;
              color: #fff;
              &.addToCart {
                background: #3dc36b;
              }
              &.buyNow {
                background: #fd604d;
              }
            }
          }
          .love_share {
            display: flex;
            .love {
              display: flex;
              align-items: center;
              padding-right: 16px;
              border-right: 1px solid #666;
              img {
                margin-right: 12px;
              }
              span {
                color: #666666;
              }
            }
            .share {
              padding-left: 18px;
            }
          }
        }
      }
    }
    aside {
      padding-left: 19px;
      box-sizing: border-box;
      width: 230px;
      border-left: 1px solid #ddd;
      h3 {
        font-size: 18px;
        color: #333333;
        margin-bottom: 20px;
      }
      ul {
        li {
          margin-bottom: 30px;
          display: flex;
          cursor: pointer;
          justify-content: space-between;
          .l {
            width: 80px;
            height: 80px;
            margin-right: 10px;
            background-color: #ffc;
            img {
              width: 100%;
              display: block;
              border: 1px solid transparent;
            }
          }
          .r {
            width: 140px;
            display: flex;
            justify-content: space-around;
            flex-direction: column;
            .title {
              /* 超出一行变省略号 */
              text-overflow: ellipsis;
              width: 100%;
              font-weight: bold;
              overflow: hidden;
              white-space: nowrap;
              font-size: 14px;
              color: #666666;
            }
            .score {
              color: #666666;
              span {
                font-weight: bold;
                font-size: 18px;
                color: #ff5e0f;
              }
            }
          }
          &:hover {
            img {
              border: 1px solid @base-color;
            }
            .title {
              color: @base-color;
            }
          }
        }
      }
    }
  }
  .tabs {
    border-top: 1px solid #ececec;
    display: flex;
    width: 100%;
    margin-bottom: 27px;
    li {
      width: 120px;
      height: 50px;
      cursor: pointer;
      background: #fff;
      text-align: center;
      line-height: 50px;
      &.active {
        background: #ececec;
        font-weight: bold;
      }
    }
  }
  .issue {
    padding-bottom: 40px;
    h4 {
      font-size: 18px;
      font-weight: bold;
      margin-bottom: 10px;
      margin-top: 20px;
    }
    p {
      line-height: 1.4em;
    }
  }
}
</style>